Filmography
- Churchill's Island (1941) as narrator
- Warclouds in the Pacific (1941) as narrator
- Inside Fighting China (1941) as narrator
- Studio One's "1984" (1948) as O'Brien
- Othello (1953) (television) as Othello
- The Philip Morris Playhouse (one episode, 1953) — Joe
- Omnibus (one episode, 1953) — Ed Bailey
- Danger (one episode, 1954) — Stranger
- The Silver Chalice (1954) — Saint Peter
- Justice (one episode, 1954, "The Desperate One")
- You Are There (three episodes, 1954–1955) — Ludwig van Beethoven, Charles Stewart Parnell
- Tight Spot (1955) — Benjamin Costain
- Climax! (one episode, 1955) — Dr. Charles Saunders
- The Elgin Hour (one episode, 1955) — Vernon Dyall
- Studio 57 (one episode, 1955) — Gentry Morton
- Alfred Hitchcock Presents (one episode, 1956) — Mr. X
- Autumn Leaves (1956) — Mr. Hanson
- The Alcoa Hour (one episode, 1956) — Sheriff Gash
- Armstrong Circle Theatre (one episode, 1956) — Angelina
- The United States Steel Hour (one episode, 1956) — Dallas
- Sailor of Fortune (26 episodes, 1955–1956) as Capt. Grant 'Mitch' Mitchell
- Producers' Showcase (three episodes, 1955–1957) — Julius Caesar, Gorgas
- Kraft Television Theatre (one episode, 1957) — Col. Matthews
- Playhouse 90 (one episode, 1957) — Lowell Williams
- Studio One (five episodes, 1953–1957)
- Peyton Place (1957) — Prosecutor
- The Hard Man (1957) — Rice Martin
- The Gift of Love (1958) — Grant Allan
- Suspicion (one episode, 1958)
- Shirley Temple's Storybook (one episode, 1958) — King Bertrand
- The Last of the Fast Guns (1958) — Michael O'Reilly
- The Buccaneer (1958) — Mercier
- The Trap (1959) — Davis
- Bonanza (431 episodes, 1959–1973) — Ben Cartwright
- The Third Man (one episode, 1959)
- The Gale Storm Show (one episode, 1959) — Constable Barnaby
- Mike Hammer (two episodes, 1959) — Carl Kunard, Emmett Gates
- Bronco (one episode, 1959) — Capt. Amos Carr
- Wagon Train (one episode, 1959) as Christopher Webb
- Cheyenne (two episodes, 1960) — Colonel Bell
- Destiny of a Spy (1969) — Peter Vanin
- Swing Out, Sweet Land (1970) — George Washington
- The Harness (1971) — Peter Randall
- The Special London Bridge Special (1972) — Fiddler on the Roof
- Nippon Chinbotsu (1973) — Ambassador Warren Richards
- Griff (13 episodes, 1973–1974) — Wade Griffin
- Rex Harrison Presents Stories of Love (1974)
- Earthquake (1974) — Sam Royce
- Nevada Smith (1975) — Jonas Cord
- Man on the Outside (1975) — Wade Griffin
- Arthur Hailey's the Moneychangers (1976) — George Quartermain
- Roots (two episodes, 1977) — John Reynolds
- SST: Death Flight (1977) — Marshall Cole
- The Hardy Boys/Nancy Drew Mysteries (two episodes, 1977) — Inspector Hans Stavlin
- The Trial of Lee Harvey Oswald (1977) — Matthew Arnold Watson
- The Bastard (1978) — Bishop Francis
- The Little Brown Burro (1978) — Storyteller (voice)
- Battlestar Galactica (21 episodes, 1978–1979) — Commander Adama
- The Love Boat (three episodes, 1979–1982) — Buck Hamilton, Buddy Bowers
- Klondike Fever (1980) — Sam Steele
- Galactica 1980 (ten episodes, 1980) as Commander Adama
- Living Legend: The King of Rock and Roll (1980)
- Pink Lady (one episode, 1980)
- Vega$ (two episodes, 1980) — Emil Remick
- A Time for Miracles (1980) — Bishop John Carroll
- Aloha Paradise (one episode, 1981) — Businessman
- A Gift of Music (1981) — Host
- Code Red (1981) — Captain Joe Rorchek
- Ozu no mahôtsukai (1982) — The Wizard (voice)
- Code Red (12 episodes, 1981–1982) — Battalion Chief Joe Rorchek
- Police Squad! (one episode, 1982) — Stabbed Man
- Heidi's Song (1982) — Grandfather (voice)
- Highway to Heaven (one episode, 1985) — Fred Fusco
- Noah's Ark (1986) — Noah (voice)
- Vasectomy: A Delicate Matter (1986) — Theo Marshall
- The Alamo: Thirteen Days to Glory (1987) — Gen. Sam Houston
Read more about this topic: Lorne Greene